Dirty Elmo 

Originating from the fuzzy red monster from Sesame Street, this action refers to the inappropriate foreplay of tickling a red headed person.

Last night began with a long dirty Elmo session.

Dirty Elmo by DElmo02 March 27, 2015

Dirty elmo 

When you take a shit on a curb and you put someone’s teeth on the shit and you curb stomp them

Person 1: “I’m gonna dirty Elmo you

Dirty elmo by Analbead42069 January 23, 2021

Poppin the Dirty Elmo 

After having rough sex, the dude pops his red balls (resembling elmo) into the chick's ass, thus making it dirty. Afterwards, the chick can either lick it off, like a lollipop, or just enjoy the ball to anus pleasure. The definition is quite flexible.

Example 1 (balls into anus):
Dude1: Dude, she's so hot.
Dude2: I'm gonna enjoy poppin the dirty elmo.

Example 2 (lollipop licking the dirty elmo):
Dude1: Dude, I hear she's quite rough in bed.
Dude2: I hope she enjoys poppin the dirty elmo.

Poppin the Dirty Elmo by Captain Elmo April 1, 2005